x+1 |
1-x |
4+2x |
1-x |
x+1 |
1-x |
4+2x |
1-x |
5 |
3 |
5 |
3 |
5 |
3 |
x-1 |
x-3 |
a |
x-3 |
2-x |
x-3 |
a |
x-3 |
A.1 | B.-1 | C.-11 | D.-5 |
1 |
x-2 |
1-x |
2-x |
A.1+(1-x)=x-2 | B.1-(1-x)=x-2 | C.1-(1-x)=1 | D.1+(1-x)=1 |
2-x |
x-3 |
1 |
3-x |
1 |
1-x2 |
-3 |
x-1 |
5 |
1+x |
x |
x-3 |
a |
x-3 |
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